Salt water for lamp designed to serve people without electricity

Salt water for lamp designed to serve people without electricity

A startup team calls their work a product. They also call it a social movement. Many people in the over-7,000 islands in the Philippines lack access to electricity .The startup would like to make a difference. Their main ingredient is salt.

Their product is a lamp that takes two tablespoons of salt and a glass of water in order to work. This is from the Sustainable Alternative Lighting, or SALt Corp. This is a startup focused on delivering a cost effective, environmentally safe lamp that runs on .

Their lamp could be an alternative to kerosene/battery powered lamps and candles as a main source of lighting. They said use of the SALt lamp for eight hours a day every day delivers an anode lifespan of six months and used just as an alternative light source will prolong the life of the anode for more than a year.

The lamp "uses the science behind the Galvanic cell, the basis for battery-making," they said, in changing electrolytes to a saline solution—an approach that is nontoxic, and avoids the tragic incidents of fires that are caused by candles and tipped-over lamps.

For people living along coastlines, even running up the cost of salt would not be a problem. They could store ocean water in bottles and use them to power the lamp. The salinity of can operate the lamp. They said it would give eight hours of running-time. "Salinity is expressed by the amount of found in 1,000 grams of water. The average ocean salinity is 35 parts per thousand."

Aisa Mijeno is co-founder and CEO, She is a faculty member of engineering at De La Salle University. Raphael Mijeno is co-founder and . Joefrey Frias, a mechanical design engineer, serves as .

Salt water for lamp designed to serve people without electricity

They have not yet announced a price for this lamp; their site said they are still doing a cost analysis. They are taking pre-orders online. They aim to get the out by the end of the year or early next year. They said their "priority is to build lamps for our target communities and for the communities of the NGOs and foundations who will partner with us."

In a May interview, Aisa Mijeno said in Asian Scientist Magazine that "I am proud of this research because it is not just a result of tedious experiments but also a product of life experiences," she said, of living among people in the mountains with nothing more than sun and fuel-based lamps as their main source of lighting.

In an interview with Core77, Mijeno said that "there are so many remarkable and creative people in rural Philippines. Their resilience, no matter their condition in life, motivates me to overcome all hurdles. We just need to give these people the chance at life through education by providing them the basic things: the means to provide food to their family, clean water and light."


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More information: www.salt.ph/

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User comments

Jul 27, 2015
What is it about green energy and/or "helping the poor" that attracts charlatans? Look people there in no energy in salt or salt water. The energy for this battery is supplied by consumable metals. Why exactly, was there no mention of this?

Jul 27, 2015
"SALt have caught the attention of not just local but international competitions and received several awards.
Philippines, South Korea, Japan, Singapore
Top 10 - Ideaspace Foundation 2014, Philippines
Kotra Award - Startup Nations Summit 2014, South Korea
People's Choice Award - Startup Nations Summit 2014, South Korea
ASEAN SME Sustainability Commitment - ACSSA 2015, Philippines
Top 10 - Asia Entrepreneurship Award 2015, Japan
Top 100 - Echelon Asia Summit 2015, Singapore
National Research Foundation TechVenture 2015, Singapore"

It seems groups with far superior knowledge than you would disagree with them being "charlatans".

Keep in mind kerosene and batteries are consumables and toxic to boot.

Jul 27, 2015
Okay, great, the electrolyte is salt water. But what about the electrodes? It seems to me that they'd need to be renewed or recycled somehow. The article doesn't discuss that.

Jul 27, 2015
Okay, great, the electrolyte is salt water. But what about the electrodes? It seems to me that they'd need to be renewed or recycled somehow. The article doesn't discuss that.

The article says the anode lifespan (under stated usage conditions) is about six months, but it doesn't say what the anode is made of.

Jul 27, 2015
Okay, great, the electrolyte is salt water. But what about the electrodes? It seems to me that they'd need to be renewed or recycled somehow. The article doesn't discuss that.


I saw an article in another site that said the electrodes are replaceable in it. It didn't say what they were but probably just zinc and copper.

Jul 28, 2015
Incredibly, this has not been removed by physorg editors. Read and reread, it fails the minimal requirements of an information piece.

Jul 28, 2015
This comment has been removed by a moderator.

Jul 28, 2015
This lamp is indeed a battery with consumable electrodes, and powered by metals rather than by salt, but that neither guarantees or precludes its environmental soundness.

Most new LEDs have efficacies exceeding 80 lumens per Watt. In contrast a simple kerosene flame has a luminous efficacy of only 0.08 lumens/W, and while a fancy pressurized lamp with a good mantle can raise this by ~10x, that is still only raising it from 0.1% to 1% of the efficacy of a low-end LED. Even compared to the pressurized lamp, the LED's higher efficiency pays for the 35% efficiency of even old-coal-plant electricity to the smelter for the electrodes and the 70% to 90% efficiency of the battery with more than an order of magnitude to spare.

Thus a better comparison should be of this salt + metal battery to OTHER BATTERIES. Since the salt is local and free, are the electrodes less expensive, lighter or more durable?

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